ID
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
New adsorbent Last month, BASF SE (Ludwigshafen, Germany; www.basf.com) launched…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
ConvalFocus on Valves
These versatile, modular valves enable quick installation More than 2,500…
NEW PRODUCTS + Show More

Comment

This ‘smart’ wallpaper has built-in fire detection

By Paul Grad |

Researchers from the Chinese Academy of Sciences (Beijing, China; www.cas.cn), led by professor Ying-Jie Zhu, have reported a “smart” fire-alarm wallpaper prepared using ultralong hydroxyapatite nanowires and graphene oxide thermosensitive sensors. At room temperature, the graphene-oxide sensor is an electrical insulator, but it becomes electrically conductive at high temperatures. In case of fire, high temperature will quickly remove the oxygen-containing groups of graphene oxide, causing an alarm to be sent out. After surface modification of graphene oxide with polydopamine, the sensitivity and flame retardancy of the sensor are further improved, resulting in a low-temperature fast response and sustained working time in a flame (at least 5 min.). Hydroxyapatite, Ca10(OH)2(PO4)6, is the major inorganic component of bone and teeth in vertebrates, and has been investigated for biomedical applications. However, hydroxyapatite materials are usually brittle because they form particles, short rods or needles. The team has found that ultralong hydroxyapatite nanowires with ultrahigh aspect ratios have high flexibility and can solve the problems of brittleness and poor flexibility. According to the team, ultralong hydroxyapatite nanowires…
Related Content
Chementator Briefs
New adsorbent Last month, BASF SE (Ludwigshafen, Germany; www.basf.com) launched Sorbead Air, an efficient adsorbent for drying compressed air. The…
Extracting gold without cyanide
The first gold using a process without cyanide and without mercury has been produced using technology from CSIRO Minerals Technology…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How can accurate pH measurement prevent power plant corrosion?
Five Reasons Why Chemical Companies Are Switching to Tunable Diode Laser Analyzer Technology
Simplify sensor handling and maintenance with ISM
Three reasons to measure pH in-line
ABB Ability™ technology to transform BASF rotating equipment into intelligent machinery and improve uptime and reliability

View More

Live chat by BoldChat